1. Department of Neurosurgery, The Affiliated Hospital of Logistic University of Chinese People's Armed Police Force, Tianjin 300162, P.R. China
2. Department of Biochemistry and Physiology, Logistic University of Chinese People's Armed Police Force, Tianjin 300309, P.R. China
3. Graduate Management Team, Logistic University of Chinese People's Armed Police Force, Tianjin 300309, P.R. China
4. Department of Neurology, Shanghai Fourth People's Hospital, Shanghai 200000, P.R. China